<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>网页图标</title>
    <link rel="icon" href="http://www.jd.com/favicon.ico">
    <style>
        div{
            /* 文字颜色 */
            color: green;
            /* 设置背景色 */
            background-color: red;
            /* 文字大小 */
            font-size: 30px;
        }
    </style>
    <!-- <link rel="stylesheet" href="css/page.css"> -->
</head>
<body>
<div>我是div</div>
</body>
</html>